1-11Enabling Management VLAN Auto-negotiationThe management VLAN limits the cluster management range. If the device discovered by themanagement device does not belong to the management VLAN, meaning the cascade ports and theports connecting with the management device do not allow the packets from the management VLAN topass, and the new device cannot be added to the cluster. Through the configuration of the managementVLAN auto-negotiation function, the cascade ports and the ports directly connected to the managementdevice can be automatically added to the management VLAN.Follow these steps to configure management VLAN auto-negotiation:To do… Use the command… RemarksEnter system view system-view —Enter cluster view cluster —Enable management VLANauto-negotiationmanagement-vlansynchronization enableRequiredDisabled by default.Configuring Communication Between the Management Device and the MemberDevices Within a ClusterIn a cluster, the management device and member devices communicate by sending handshakepackets to maintain connection between them. You can configure interval of sending handshakepackets and the holdtime of a device on the management device. This configuration applies to allmember devices within the cluster. For a member device in Connect state:z If the management device does not receive handshake packets from a member device within theholdtime, it changes the state of the member device to Disconnect. When the communication isrecovered, the member device needs to be re-added to the cluster (this process is automaticallyperformed).z If the management device receives handshake packets from the member device within theholdtime, the state of the member device remains Active.Follow these steps to configure communication between the management device and the memberdevices within a cluster:To do… Use the command… RemarksEnter system view system-view —Enter cluster view cluster —Configure the interval to sendhandshake packets timer interval-time Optional10 seconds by defaultConfigure the holdtime of adevice holdtime seconds Optional60 seconds by defaultConfiguring Cluster Management Protocol PacketsBy default, the destination MAC address of cluster management protocol packets (including NDP,NTDP and HABP packets) is a multicast MAC address 0180-C200-000A, which IEEE reserved for lateruse. Since some devices cannot forward the multicast packets with the destination MAC address of
